diff --git a/.travis.yml b/.travis.yml
index dc9c6ea..38be194 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -42,6 +42,7 @@ matrix:
     - rvm: 1.8.7
       gemfile: gemfiles/mongoid_40.gemfile
   allow_failures:
+    - rvm: ruby-head
     - gemfile: gemfiles/mongoid_40.gemfile
     - gemfile: gemfiles/active_record_edge.gemfile
   fast_finish: true